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📝 Instruction Set of SAP-III Computer

📖 From An Introduction To Microprocessor 8085 • 4. Simple as Possible (SAP) - III • 5 questions available

Practice MCQs for Instruction Set of SAP-III Computer. Test your knowledge with carefully crafted questions across easy, medium, and hard difficulty levels.

🔄 Last updated: 2026-07-30

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📝 Sample Questions

Q1. A program must copy the value stored at memory address 0x3A into the accumulator. Which SAP-III instruction performs this operation?

🔹 A. LDA 0x3A
🔹 B. STA 0x3A
🔹 C. ADD 0x3A
🔹 D. JMP 0x3A

💡 Difficulty: easy | ✅ Correct: A

Q2. To create a loop that decrements a counter from 5 down to 0, which sequence of SAP-III instructions is correct?

🔹 A. LDA #5; DEC; JNZ LOOP
🔹 B. LDA #5; STA COUNT; LOOP: DEC COUNT; JNZ LOOP
🔹 C. LDA #5; LOOP: SUB ONE; JNZ LOOP
🔹 D. LDA #5; LOOP: ADD ONE; JNZ LOOP

💡 Difficulty: medium | ✅ Correct: B

Q3. In SAP-III, the opcode format uses bits 7‑5 for the operation code and bits 4‑0 for the operand address. Which 8‑bit binary pattern represents the instruction to store the accumulator into memory address 0x12?

🔹 A. 11010010
🔹 B. 10110010
🔹 C. 10010010
🔹 D. 11110010

💡 Difficulty: hard | ✅ Correct: C

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🔗 Related Topics

📝 Programming Model of SAP-III Computer📝 Data Transfer Group of SAP-III Computer📝 Arithmetic Group of Instructions of SAP-III Computer📝 Logic Transfer Group of SAP-III Computer📝 Branch Group of SAP-III Computer
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